Home / 7,486.85-10,331.89-4,129.75

Finding the Fourth Proportional to 7,486.85, 10,331.89 and 4,129.75

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Solution

The fourth proportional to 7,486.85, 10,331.89 and 4,129.75 is: 5,699.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.85 : 10,331.89 = 4,129.75 : x
  2. Step 2: Convert to fraction form
    7,486.85/10,331.89 = 4,129.75/x
  3. Step 3: Cross multiply
    7,486.85x = 10,331.89 × 4,129.75
  4. Step 4: Simplify right side
    7,486.85x = 42,668,071.07
  5. Step 5: Solve for x
    x = 42,668,071.07/7,486.85
  6. Step 6: Final answer
    x = 5,699.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.